const OWED_METERED: i64 = _; // 21_600_000i64Expand description
The longest a full round owed or asked for (Memory::owed) waits for a
connection not metered: six hours of exchanges, counted as AWAITED is
(milliseconds). A phone always on mobile data, which marks most doses,
would otherwise leave the others saying “check” on its doses for days
after one damaged line, until 4 MiB of growth.